package com.itheima.neibulei3;

public class Demo01 {

    public static void main(String[] args) {
        Outer.i=10;
        System.out.println(Outer.i);
        Outer.show();
       /* Outer.Inner inner = new Outer.Inner();
        inner.j=20;
        System.out.println(inner.j);
        inner.sing();*/
       Outer.Inner.j=20;
       Outer.Inner.sing();

    }
}

class Outer {
    static int i;

    public static void show() {
        System.out.println("show");
    }

    static   class Inner {
        static int j;

        public static void sing() {
            System.out.println(i);
        }
    }

}